feat(logs): добавить раздел логов с историей и живым потоком

lib/navigation.ts

@@ -42,6 +42,7 @@ export const navigationItems: NavigationItem[] = [
   { id: "certificates", title: "Сертификаты",              group: "Управление",  url: "/certificates",    icon: BadgeCheckIcon, keywords: ["ssl","tls","cert","pki","x509"] },
   { id: "backups",      title: "Бэкапы",                   group: "Управление",  url: "/backups",         icon: HardDriveIcon, keywords: ["backup","резервная копия"] },
   // Инструменты
+  { id: "logs", title: "Логи", group: "Инструменты", url: "/logs", icon: ActivityIcon, keywords: ["logs", "журнал", "события", "syslog", "ошибки"] },
   { id: "route-optimizer", title: "Оптимизатор маршрутов", group: "Инструменты", url: "/route-optimizer", icon: RouteIcon, keywords: ["routing","wan","failover","переключение"] },
   { id: "ospf",         title: "OSPF",                     group: "Инструменты", url: "/ospf",            icon: GitForkIcon, keywords: ["ospf","igp","neighbors","lsa"] },
   { id: "bgp",          title: "BGP",                      group: "Инструменты", url: "/bgp",             icon: GitMergeIcon, keywords: ["bgp","ebgp","ibgp","сессии","peers"] },